Spectroscopic observations of new high proper motion DA white dwarfs

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Spectroscopic observations of new high proper motion DA white dwarfs

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dc.contributor.author	Arazimova, Eva
dc.contributor.author	Kawka, Adela
dc.contributor.author	Stephane, Vennus
dc.contributor.editor	Kovačević, Andjelka
dc.date.accessioned	2011-01-25T09:52:18Z
dc.date.available	2011-01-25T09:52:18Z
dc.date.issued	2008
dc.identifier.isbn	978-86-80019-30-7	en_US
dc.identifier.uri	http://hdl.handle.net/123456789/1552
dc.description.provenance	Submitted by Slavisha Milisavljevic (slavisha) on 2011-01-25T09:52:18Z No. of bitstreams: 2 Arazimova.pdf: 640419 bytes, checksum: 5baf788df7e2d7d2901066e2eca94876 (MD5) Arazimova.pdf: 640419 bytes, checksum: 5baf788df7e2d7d2901066e2eca94876 (MD5)	en
dc.description.provenance	Made available in DSpace on 2011-01-25T09:52:18Z (GMT). No. of bitstreams: 2 Arazimova.pdf: 640419 bytes, checksum: 5baf788df7e2d7d2901066e2eca94876 (MD5) Arazimova.pdf: 640419 bytes, checksum: 5baf788df7e2d7d2901066e2eca94876 (MD5) Previous issue date: 2008	en
dc.language.iso	en	en_US
dc.publisher	Astronomical Observatory Belgrade	en_US
dc.title	Spectroscopic observations of new high proper motion DA white dwarfs	en_US
mf.subject.keywords	We used the revised New Luyten Two-Tenths (rNLTT) catalog to select high proper motion white dwarf candidates. We studied the spectra of 70 hydrogen-rich white dwarfs, which were obtained at the Cerro Tololo Inter-American Observatory (CTIO) and extracted from the Sloan Digital Sky Survey (SDSS). We determined their effective temperature and surface gravity by fitting their Balmer line profiles to model white dwarf spectra. Using mass-radius relations we determined their mass and cooling age. We also conducted a kinematical study of the white dwarf sample and found that most belong to the thin disk population. We have identified three magnetic white dwarfs and estimated their surface magnetic field. In the studied sample, we have identified 6 white dwarfs that lie within 20 pc from the Sun.	en_US
mf.document.pages	6	en_US
mf.contributor.editor-in-chief	Dimitrijević, S. Milan
mf.contributor.technical-editor	Milovanov, Tatjana

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THE SECOND SUMMER SCHOOL IN ASTRONOMY

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